MAX1698(2000) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX1698 Datasheet PDF : 8 Pages
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High-Efficiency Step-Up
Current Regulator for LEDs
ABSOLUTE MAXIMUM RATINGS
VCC, SHDN to GND ..................................................-0.3V to +6V
EXT, FB, CS, ADJ, REF to GND..................-0.3V to (VCC + 0.3V)
GND to PGND.....................................................................±0.3V
Continuous Power Dissipation (TA = +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ............444mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature Range (soldering, 10s)......................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +3.3V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
Supply Voltage
VCC
2.7
Quiescent Supply Current
ICC
VFB = 0.3V
Undervoltage Lockout
Rising edge
2.25
Undervoltage Hysteresis
ADJ = REF
285
FB Regulation Voltage
VFB
VADJ = 100mV
18
CS Trip Current
FB = GND
0.8
CS Input Current
ICS
Minimum Off Time
tOFF(MIN) FB = GND, ADJ = REF
0.8
Maximum On Time
tON(MAX) FB = GND, ADJ = REF, CS = GND
10
ADJ Start Threshold
30
ADJ Input Range
FB Input Bias Current
ADJ Input Bias Current
Shutdown Supply Current
REF Output Voltage
REF Load Regulation
REF Short-Circuit Current
VADJ
IFB
IADJ
VREF
∆VREF
VFB = 300mV
ADJ = REF
SHDN = GND
IREF = 0
IREF = 0 to 150µA
REF = GND
0.03
-15
-50
1.20
REF Power-Supply Rejection
Ratio
PSRR VCC = 2.7V to 5.5V
EXT Driver Sink/Source Current
VCC = 5V, EXT = 2V
EXT Driver On-Resistance
VCC = 5V
SHDN Input High Voltage
VIH
VCC = 2.7V to 5.5V
2
SHDN Input Low Voltage
VIL
VCC = 2.7V to 5.5V
SHDN Input Bias Current
ISHDN VCC = 2.7V to 5.5V
-1
TYP
260
2.4
80
300
24
1.5
1.0
15
50
0.01
1.25
-2
0.45
+0.3
0.2
MAX
5.5
500
2.55
315
30
2.5
0.8
1.2
20
70
REF
15
50
1
1.30
-25
1
UNITS
V
µA
V
mV
mV
A
ARMS
µs
µs
mV
V
nA
nA
µA
V
mV
mA
+2 mV/V
A
8
Ω
V
0.8
V
1
µA
2 _______________________________________________________________________________________
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